A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)
NSN 5998-01-215-2482
NSN 5855-01-629-2882
NSN 6650-00-803-2754
NSN 5925-01-211-7745
NSN 5950-01-331-7010
NSN 5950-01-079-8626
NSN 6320-00-483-0451
NSN 5855-01-574-1821
NSN 6320-00-646-3311
NSN 6685-01-412-0100
NSN 5920-01-379-1317
NSN 5945-01-118-2681